markdown 自定义主题创建的Wordpress提示
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<?php
/**
* Class autoloader
* @param string $class fully qualified class name
* @return void
*/
function plugins_autoloader($class)
{
$prefix = 'Foo\\Bar\\';
$base_dir = __DIR__ . '/plugins/';
$len = strlen($prefix);
if (strncmp($prefix, $class, $len) !== 0) {
return;
}
// get the relative class name
$relative_class = strtolower( substr($class, $len) );
// First, separate the components of the incoming file.
$file = explode( '\\', $relative_class );
$last_part_post = count($file) - 1;
// add class prefix to the file name by wp standart
$file[ $last_part_post ] = 'class-' . $file[ $last_part_post ];
$file = implode(DIRECTORY_SEPARATOR, $file);
$file = str_replace('_', '-', $file);
$file = $base_dir . $file . '.php';
if (file_exists($file)) {
require_once $file;
} else {
print $file;
}
return;
}
try {
spl_autoload_register('\\plugins_autoloader');
} catch (\Exception $e) {
print 'Something Wrong!';
}# Usefool links, tips and examples with custom plugin development
#### Create custom plugins
+ [Writing a Plugin](https://codex.wordpress.org/Writing_a_Plugin)
+ [How To Include CSS and JavaScript Conditionally And Only When Needed By The Posts](http://beerpla.net/2010/01/13/wordpress-plugin-development-how-to-include-css-and-javascript-conditionally-and-only-when-needed-by-the-posts/)
+ [Keeping Plugins Clean: Using Activate, Deactivate and Uninstall Hooks](https://premium.wpmudev.org/blog/activate-deactivate-uninstall-hooks/)
+ [Avatar Manager for WordPress](https://github.com/inhausmakers/avatar-manager) - репозиторий плагина как пример кастомных полей и загрузки картинки.
+ [How to add a custom user field in WordPress](https://www.cssigniter.com/how-to-add-a-custom-user-field-in-wordpress/)
+ [Best Practices](https://developer.wordpress.org/plugins/plugin-basics/best-practices/)
+ [How to Write a WordPress Plugin](https://www.devlounge.net/extras/how-to-write-a-wordpress-plugin)
+ [The Right Way to Customize a WordPress Plugin](https://iandunn.name/2014/01/10/the-right-way-to-customize-a-wordpress-plugin/)
+ [Add Page Templates to WordPress with a Plugin](https://www.wpexplorer.com/wordpress-page-templates-plugin/)
+ [How To Add Custom Rewrite Rules In WordPress](http://clivern.com/how-to-add-custom-rewrite-rules-in-wordpress/)+ [Theme Handbook](https://developer.wordpress.org/themes/)
+ [THE BEGINNER’S GUIDE TO CREATING A THEME WITH UNDERSCORES](https://torquemag.io/2017/08/beginners-guide-to-creating-a-theme-underscores/)
+ [Template Hierarchy](https://developer.wordpress.org/themes/basics/template-hierarchy/)
+ [Guttenberg - new editor, FAQ](https://wordpress.org/gutenberg/handbook/designers-developers/faq/)
+ [Как вывести количество просмотров записи на WordPress](https://izuchatel.com/kak-vyvesti-kolichestvo-prosmotrov-zapisej-na-wordpress/)
+ [WordPress Child Theme Complete Guide](https://www.wpexplorer.com/wordpress-child-theme-guide/)
+ [How to Add a Custom Author Profile Page to Your WordPress](https://www.wpbeginner.com/wp-themes/how-to-add-a-custom-author-profile-page-to-your-wordpress/)
+ [The WordPress Coding Standards](https://code.tutsplus.com/series/the-wordpress-coding-standards--cms-820)
+ [How To Redirect Default WordPress Login Into A Custom Login Page](https://www.inkthemes.com/how-to-redirecting-wordpress-default-login-into-a-custom-login-page/)
+ [Customizing the WordPress Comment Form](https://premium.wpmudev.org/blog/customizing-wordpress-comment-form/)
+ [Настройка комментариев в WordPress - функциональность и внешний вид](https://php-academy.kiev.ua/blog/customizing-comments-in-wordpress--functionality-and-appearance)
+ [How to Display Author’s Twitter and Facebook on the Profile Page](https://www.wpbeginner.com/wp-tutorials/how-to-display-authors-twitter-and-facebook-on-the-profile-page/)
+ [How to Search WordPress Users by Profile Field Value](https://www.wpexpertdeveloper.com/search-wordpress-users-by-profile-field-value/)
+ [Пример вывода похожих постов](https://misha.blog/wordpress/pohozhie-zapisi.html)
+ [Что такое WP-CLI? Руководство для новичков](https://code.tutsplus.com/ru/tutorials/what-is-wp-cli-a-beginners-guide--cms-28649)
### Custom login and register
+ [Custom login page](https://websiteguider.com/create-a-custom-login-page-for-wordpress-without-plugin/)
+ [Customizing the Login Form](https://codex.wordpress.org/Customizing_the_Login_Form) - article in codex wp.
+ [How to programatically change username (user_login)?](https://wordpress.stackexchange.com/questions/103504/how-to-programatically-change-username-user-login)
**Example custom login page**
<?php
/**
* Template Name: Sign In
*/
get_header();
if($_POST)
{
global $wpdb;
//We shall SQL escape all inputs
$username = $wpdb->escape($_REQUEST['username']);
$password = $wpdb->escape($_REQUEST['password']);
$remember = $wpdb->escape($_REQUEST['rememberme']);
if($remember) $remember = "true";
else $remember = "false";
$login_data = array();
$login_data['user_login'] = $username;
$login_data['user_password'] = $password;
$login_data['remember'] = $remember;
$user_verify = wp_signon( $login_data, false );
if ( is_wp_error($user_verify) )
{
echo '<span class="mine">Invlaid Login Details</span>';
} else
{
echo "<script type='text/javascript'>window.location.href='". home_url() ."'</script>";
exit();
}
}
else {
?>
<form id="wp_login_form" action="" method="post">
<label for="tab-1" class="tab">Sign In</label><br>
<label class="my-username">Username</label><br>
<input type="text" name="username" class="text" value=""><br>
<label class="my-password">Password</label><br>
<input type="password" name="password" class="text" value=""> <br>
<label>
<input class="myremember" name="rememberme" type="checkbox" value="forever"><span
class="hey">Remember me</span></label>
<br><br>
<input type="submit" id="submitbtn" name="submit" value="Login">
</form>
<?php
}
get_sidebar();
get_footer();
?>
+ [Disable WordPress dashboard for subscribers](https://www.stewright.me/2016/03/disable-wordpress-dashboard-subscribers/)
**Custom rewrite rules**
function custom_rewrite_rule() {
add_rewrite_rule('^profile/([0-9]+)/?$', 'index.php?page_id=9&user_id=$matches[1]', 'top');
}
add_action('init', 'custom_rewrite_rule', 10, 0);
function custom_rewrite_tag() {
add_rewrite_tag('%user_id%', '([^&]+)');
}
add_action('init', 'custom_rewrite_tag', 10, 0);
### PHP OOP with Wordpress
+ [Example Implementations of PSR-4](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-4-autoloader-examples.md#class-example)
+ [Class Autoloader for WordPress theme](https://gist.github.com/iCaspar/539e620a242ae55ded91)
+ [Simple Autoloader for WordPress](https://github.com/tommcfarlin/simple-autoloader-for-wordpress/)
+ [Object-Oriented Autoloading in WordPress](https://code.tutsplus.com/series/object-oriented-autoloading-in-wordpress--cms-1101) - цикл статей на сайте code.tutsplus.com.
+ [Namespaces and Autoloading in WordPress](https://tommcfarlin.com/namespaces-and-autoloading-2017/)
+ [Using namespaces and autoloading with Composer in WordPress plugins](https://medium.com/@spencerfeng/using-namespaces-and-autoloading-with-composer-in-wordpress-plugins-72ea36d82369)
### Static front page
+ [Designing a Custom Home Page for Your WordPress Website](https://www.sitepoint.com/designing-a-custom-home-page-for-your-wordpress-website/) - about Customizer and Kirki toolkit for customization wordpress theme.
+ [Creating a Static Front Page](https://codex.wordpress.org/Creating_a_Static_Front_Page) - официальное руководство.
# Custom loop on static front page
$paged = (get_query_var('page')) ? get_query_var('page') : 1;
$args=array('category_name'=>'portfolio','posts_per_page'=>4,'paged'=>$paged);
query_posts($args);
if (have_posts()) : while (have_posts()) : the_post();
/...
endwhile;
posts_nav_link();
wp_reset_query();
endif;
**Example custom wp_query with pagination and offset**
$per_page = 1;
$offset_start = 1;
$offset = ( $current_page - 1 ) * $per_page + $offset_start;
$current_page = max( get_query_var( 'page' ), 1 ); // page or paged in other case
$args = array(
'posts_per_page' => 1,
'paged' => $current_page,
'post__not_in' => get_option( 'sticky_posts' ), // exclude "sticky posts"
'orderby' => 'post_date',
'order' => 'DESC',
'offset' => $offset
);
$main_articles = new WP_Query( $args );
// Manually count the number of pages, because we used a custom OFFSET (i.e.
// other than 0), so we can't simply use $post_list->max_num_pages or even
// $post_list->found_posts without extra work/calculation.
$total_rows = max( 0, $main_articles->found_posts - $offset_start );
$total_pages = ceil( $total_rows / $per_page );
if ( $main_articles->have_posts() ):
/* Start the Loop */
while ( $main_articles->have_posts() ) :
$main_articles->the_post();
// output articles
endwhile;
// output pagination
echo paginate_links( array(
'total' => $total_pages,
'current' => $current_page,
'type' => 'plain',
'end_size' => 10,
'mid_size' => 1,
'prev_next' => true,
'prev_text' => "<",
'next_text' => ">",
) );
wp_reset_postdata();
endif;
**Example of custom wp_query order by meta value**
# Display posts with ‘Product’ type ordered by ‘Price’ custom field:
$args = array(
'post_type' => 'product',
'orderby' => 'meta_value_num',
'meta_key' => 'price',
);
$query = new WP_Query( $args );
### Admin dashboard customization
+ [HOW TO CUSTOMIZE THE WORDPRESS BACKEND (FOR CLIENTS AND YOURSELF)](https://torquemag.io/2016/08/customize-wordpress-backend-clients/)
+ [How to Customize Your WordPress Admin Dashboard](https://www.wpexplorer.com/customize-wordpress-admin-dashboard/)
+ [How To Create A WordPress Custom Dashboard Page](https://www.wpexplorer.com/how-to-wordpress-custom-dashboard/) - создание собственной страницы в административной панели со своими стилями, обработчиками и настройками.
+ [Administration Menus](https://codex.wordpress.org/Administration_Menus) - about custom menus and dashboard pages, funciton descriptions in codex.
+ [A Quick and Easy Guide To Creating WordPress Admin Pages](https://premium.wpmudev.org/blog/creating-wordpress-admin-pages/)
+ [Plugin API/Action Reference](https://codex.wordpress.org/Plugin_API/Action_Reference)
**Custom Admin footer**
function wpexplorer_remove_footer_admin () {
echo '<span id="footer-thankyou">Built with love by <a href="http://www.wpexplorer.com/" target="_blank">WPExplorer</a></span>';
}
add_filter( 'admin_footer_text', 'wpexplorer_remove_footer_admin' );
### Thumbnails
**Get alt of the attachment image**
$thumbnail_id = get_post_thumbnail_id( $post->ID );
$alt = get_post_meta( $thumbnail_id, '_wp_attachment_image_alt', true );
+ [How to generate thumbnails when needed only?](https://stackoverflow.com/questions/8610747/trying-to-generate-wordpress-thumbnails-programmatically)
### Plugins
+ [Classic Editor for WP](https://wordpress.org/plugins/classic-editor/)
### Cache
+ [W3 Total Cache](https://easyengine.io/wordpress-nginx/tutorials/single-site/w3-total-cache)
+ [9 Tips for Improving WordPress Performance](https://www.nginx.com/blog/9-tips-for-improving-wordpress-performance-with-nginx/#fastcgi)
+ [Use Redis for wordpress](https://www.digitalocean.com/community/tutorials/how-to-configure-redis-caching-to-speed-up-wordpress-on-ubuntu-14-04)
+ [Using Redis Object Cache to Speed Up Your WordPress Installation](https://scalegrid.io/blog/using-redis-object-cache-to-speed-up-your-wordpress-installation/)
+ [How to Set Up a Redis Server](https://www.digitalocean.com/community/tutorials/how-to-set-up-a-redis-server-as-a-session-handler-for-php-on-ubuntu-14-04)
+ [НАСТРОЙКА КЭШИРОВАНИЯ REDIS ДЛЯ УСКОРЕНИЯ WORDPRESS](https://www.8host.com/blog/nastrojka-keshirovaniya-redis-dlya-uskoreniya-wordpress/)
### Custom Widgets
+ [Widgets API](https://codex.wordpress.org/Widgets_API)
+ [How to Create a Custom WordPress Widget](https://www.wpbeginner.com/wp-tutorials/how-to-create-a-custom-wordpress-widget/)
class My_Widget extends WP_Widget {
/**
* Sets up the widgets name etc
*/
public function __construct() {
$widget_ops = array(
'classname' => 'my_widget',
'description' => 'My Widget is awesome',
);
parent::__construct( 'my_widget', 'My Widget', $widget_ops );
}
/**
* Outputs the content of the widget
*
* @param array $args
* @param array $instance
*/
public function widget( $args, $instance ) {
// outputs the content of the widget
}
/**
* Outputs the options form on admin
*
* @param array $instance The widget options
*/
public function form( $instance ) {
// outputs the options form on admin
}
/**
* Processing widget options on save
*
* @param array $new_instance The new options
* @param array $old_instance The previous options
*
* @return array
*/
public function update( $new_instance, $old_instance ) {
// processes widget options to be saved
}
}
### Search form
+ [get_search_form](https://wp-kama.ru/function/get_search_form)
### Comments form
+ [Customizing Comments in WordPress - Functionality and Appearance](https://code.tutsplus.com/articles/customizing-comments-in-wordpress-functionality-and-appearance--wp-26128)
+ [Простейшая функция склонения слов после числительных](http://dimox.name/plural-form-of-nouns/)
**Example function search by title only**
function __search_by_title_only( $search, \WP_Query $wp_query )
{
global $wpdb;
if(empty($search)) {
return $search; // skip processing - no search term in query
}
$q = $wp_query->query_vars;
$n = !empty($q['exact']) ? '' : '%';
$search = '';
$searchand = '';
foreach ((array)$q['search_terms'] as $term) {
$term = esc_sql($wpdb->esc_like($term));
$search .= "{$searchand}($wpdb->posts.post_title LIKE '{$n}{$term}{$n}')";
$searchand = ' AND ';
}
if (!empty($search)) {
$search = " AND ({$search}) ";
if (!is_user_logged_in())
$search .= " AND ($wpdb->posts.post_password = '') ";
}
return $search;
}
add_filter('posts_search', '__search_by_title_only', 500, 2);
#### Like and dislike buttons
+ [How to create WordPress like button without login/plugin](http://atiblog.com/wordpress-like-button-post-page/)
#### Create tables
+ [Creating or Updating the Table](https://codex.wordpress.org/Creating_Tables_with_Plugins#Creating_or_Updating_the_Table)
+ [Creating a Custom Table with PHP in WordPress](https://deliciousbrains.com/creating-custom-table-php-wordpress/)
+ [Creating Custom Database Tables for Your WordPress Plugins](https://premium.wpmudev.org/blog/creating-database-tables-for-plugins/)
### Upload images
**Add multipart/form-data for user profile to upload images.**
add_action('user_edit_form_tag', 'make_form_accept_uploads');
function make_form_accept_uploads() { echo ' enctype="multipart/form-data"'; }
+ [media handle upload](https://codex.wordpress.org/Function_Reference/media_handle_upload) - function for upload media files in wp.
**The code to save the attachment**
<?php
// Check that the nonce is valid, and the user can edit this post.
if (
isset( $_POST['my_image_upload_nonce'], $_POST['post_id'] )
&& wp_verify_nonce( $_POST['my_image_upload_nonce'], 'my_image_upload' )
&& current_user_can( 'edit_post', $_POST['post_id'] )
) {
// The nonce was valid and the user has the capabilities, it is safe to continue.
// These files need to be included as dependencies when on the front end.
require_once( ABSPATH . 'wp-admin/includes/image.php' );
require_once( ABSPATH . 'wp-admin/includes/file.php' );
require_once( ABSPATH . 'wp-admin/includes/media.php' );
// Let WordPress handle the upload.
// Remember, 'my_image_upload' is the name of our file input in our form above.
$attachment_id = media_handle_upload( 'my_image_upload', $_POST['post_id'] );
if ( is_wp_error( $attachment_id ) ) {
// There was an error uploading the image.
} else {
// The image was uploaded successfully!
}
} else {
// The security check failed, maybe show the user an error.
}
+ [Programmatically Resize Images in WordPress](https://tommcfarlin.com/programmatically-resize-images/)
+ [PHP wp_check_filetype](https://hotexamples.com/ru/examples/-/-/wp_check_filetype/php-wp_check_filetype-function-examples.html)
+ [How to Upload a File With WordPress’ Secret Native Functions](https://premium.wpmudev.org/blog/upload-file-functions/)
### Отправка писем и подтверждение регистрации
+ [HOW TO AUTOMATICALLY SEND A WELCOME EMAIL TO NEW USER WHEN THEY SIGN UP FOR THEIR ACCOUNT IN WORDPRESS PROGRAMMATICALLY?](https://poanchen.github.io/blog/2016/10/17/how-to-automatically-send-welcome-email-to-user-when-they-sign-up-in-wp)
+ [CUSTOM WORDPRESS WELCOME EMAILS](https://viastudio.com/custom-wordpress-welcome-emails/)
+ [How to Use SMTP Server to Send WordPress Emails](https://www.wpbeginner.com/wp-tutorials/how-to-use-smtp-server-to-send-wordpress-emails/)
+ [Easy SMTP email settings for WordPress](https://www.butlerblog.com/2013/12/12/easy-smtp-email-wordpress-wp_mail/)
**Manual user Approve:**
+ [Eonet Manual User Approve](https://wordpress.org/plugins/eonet-manual-user-approve/)
+ [WP Approve User](https://wordpress.org/plugins/wp-approve-user/)
add_action( 'user_register', 'so27450945_user_register', 10, 1 );
function so27450945_user_register( $user_id )
{
$user = get_user_by( 'id', $user_id );
$blogname = wp_specialchars_decode( get_option( 'blogname' ), ENT_QUOTES );
$message = sprintf( __( 'New user registration on your site %s:' ), $blogname ) . "\r\n\r\n";
$message .= sprintf( __( 'Username: %s'), $user->user_login ) . "\r\n\r\n";
$message .= sprintf( __( 'E-mail: %s'), $user->user_email ) . "\r\n";
@wp_mail( get_option( 'admin_email' ), sprintf( __( '[%s] New User Registration' ), $blogname ), $message);
}
+ [Build a Custom WordPress User Flow — Part 3: Password Reset](https://code.tutsplus.com/tutorials/build-a-custom-wordpress-user-flow-part-3-password-reset--cms-23811)
`retrieve_password()` - Handles sending password retrieval email to user.
### Custom images types
**Add webp type:**
//enable upload for webp image files.
function webp_upload_mimes($existing_mimes) {
$existing_mimes['webp'] = 'image/webp';
return $existing_mimes;
}
add_filter('mime_types', 'webp_upload_mimes');
//enable preview / thumbnail for webp image files.
function webp_is_displayable($result, $path) {
if ($result === false) {
$displayable_image_types = array( IMAGETYPE_WEBP );
$info = @getimagesize( $path );
if (empty($info)) {
$result = false;
} elseif (!in_array($info[2], $displayable_image_types)) {
$result = false;
} else {
$result = true;
}
}
return $result;
}
add_filter('file_is_displayable_image', 'webp_is_displayable', 10, 2);# Usefool command, tips and links for wp cli
# Add posts with dummy content for development:
wp post generate --count=10
curl http://loripsum.net/api/4 | wp post generate --post_content --count=10
# lists constants and globals as defined in your current wp-config.php file:
wp config get
# simply displays a path to the current wp-config.php file:
wp config path
# list db tables and their sizes:
wp db size --tables
# update wordpress:
wp core update
# plugins
wp plugin deactivate plugin-name-example
wp plugin delete plugin-name-example
wp plugin update --all
# check the status of the plugins currently on your site:
wp plugin status
# Reset user password:
wp user update adminuser@example.com --user_pass=new-password-example
# operations with db:
wp db optimize
wp db repair
wp db query "SELECT * FROM wp_options"
# comments:
wp comment delete $(wp comment list --status=spam --format=ids)
# media:
wp media regenerate
+ [10+ WP-CLI Tricks to Manage Your WordPress Site (Updated for WP-CLI 1.2.0)](https://www.codeinwp.com/blog/wp-cli/)以上是关于markdown 自定义主题创建的Wordpress提示的主要内容，如果未能解决你的问题，请参考以下文章